Those calls aren't from us, and they are fraudulent phone calls. We do suggest you hang up and block the numbers via your phone settings.
On our end, similar to other providers, we are working hard along with the CRTC and industry partners in order to block these types of calls. Keep in mind that they do often dial random numbers and often spoof their call displays so it can be a little tricky. We're aware and working on it though
We hope that info helps!